STANDARD SIZE DRAIN – 1 3/4" Drain.Overall Height: 220 mm ( 8.7" ),Diameter at Top: 66mm(2.59").Oil Rubbed Bronze Finish.Fits sink hole diameter Min 1.57" - Max 1.9", Fits sink thickness Min 20mm-Max 50mm(Min0.787"-Max 1.97"),This overflow drain suits for any above-counter vessel sink.